2101435020 has 72 divisors (see below), whose sum is σ = 6651511776. Its totient is φ = 536017152.

The previous prime is 2101435019. The next prime is 2101435057. The reversal of 2101435020 is 205341012.

2101435020 is a `hidden beast` number, since 21 + 0 + 143 + 502 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2101434984 and 2101435002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 249657 + ... + 257936.

It is an arithmetic number, because the mean of its divisors is an integer number (92382108).

Almost surely, 2^2101435020 is an apocalyptic number.

2101435020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101435020 is an abundant number, since it is smaller than the sum of its proper divisors (4550076756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2101435020 is a wasteful number, since it uses less digits than its factorization.

2101435020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507631 (or 507626 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2101435020 is about 45841.4116274794. The cubic root of 2101435020 is about 1280.8707901127.

Adding to 2101435020 its reverse (205341012), we get a palindrome (2306776032).

The spelling of 2101435020 in words is "two billion, one hundred one million, four hundred thirty-five thousand, twenty".